/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 * 
 * Copyright (c) 2002-2018 GuardSquare NV
 * 
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.attribute.module;

import proguard.classfile.*;
import proguard.classfile.constant.visitor.ConstantVisitor;

/**
 * Representation of a Opens entry in a Module attribute.
 *
 * @author Joachim Vandersmissen
 */
public class OpensInfo implements VisitorAccepter {
    public int u2opensIndex;
    public int u2opensFlags;
    public int u2opensToCount;
    public int[] u2opensToIndex;

    /**
     * An extra field in which visitors can store information.
     */
    public Object visitorInfo;

    /**
     * Creates an uninitialized OpensInfo.
     */
    public OpensInfo() {}

    /**
     * Creates an initialized OpensInfo.
     */
    public OpensInfo(int u2opensIndex, int u2opensFlags, int u2opensToCount, int[] u2opensToIndex) {
        this.u2opensIndex = u2opensIndex;
        this.u2opensFlags = u2opensFlags;
        this.u2opensToCount = u2opensToCount;
        this.u2opensToIndex = u2opensToIndex;
    }

    /**
     * Applies the given constant pool visitor to the package constant of the package, if any.
     */
    public void packageAccept(Clazz clazz, ConstantVisitor constantVisitor) {
        if (u2opensIndex != 0) {
            clazz.constantPoolEntryAccept(u2opensIndex, constantVisitor);
        }
    }

    /**
     * Applies the given constant pool visitor to all targets.
     */
    public void targetsAccept(Clazz clazz, ConstantVisitor constantVisitor) {
        // Loop over all targets.
        for (int index = 0; index < u2opensToCount; index++) {
            clazz.constantPoolEntryAccept(u2opensToIndex[index], constantVisitor);
        }
    }

    // Implementations for VisitorAccepter.

    public Object getVisitorInfo() {
        return visitorInfo;
    }

    public void setVisitorInfo(Object visitorInfo) {
        this.visitorInfo = visitorInfo;
    }
}
